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English definition of “know sth inside out”

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know sth inside out

informal
C1 to know everything about a subject: He knows the system inside out.
Translations of “know sth inside out”
in Chinese (Traditional) 對…瞭如指掌…
in Russian знать что-либо досконально…
in Turkish içini dışını bilmek, her şeyini bilmek…
in Chinese (Simplified) 对…了如指掌…
in Polish znać coś jak własną kieszeń…
(Definition of know sth inside out from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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